When charging systems with zeotropic refrigerants, such as R410A, the refrigerant must leave the refrigerant cylinder:
A) As a liquid. B) As a vapor.
C) Under a pressure of at least 100 psig. D) As a liquid-vapor mixture.
Question 2
The door heaters on a reach-in cooler are needed because the door handles are too cold when people touch them.
Indicate whether the statement is true or false